In this section, the presented antenna is designed by using a technique of capacitive coupling on microstrip transmission line feeding to the fractal ring radiator, as shown in Fig.1.
The step line, which feeding to the fractal ring radiator, is used to enhance the impedance bandwidth of the antenna due to increasing the capacitive coupling.
Additionally, the fractal ring radiator is created by generating the initial fractal model,which a height of generating model is a parameter Wp, around all sides of a square ring radiator, as illustrated in Fig.
2,resulting in the reducing radiator size.